References ▼
#include "ltwia.h"
L_LTWIA_API L_INT EXT_FUNCTION L_WiaInitSession(uWiaVersion, phSession)
L_UINT uWiaVersion; |
WIA version you wish to use |
pHWIASESSION phSession; |
pointer to a WIA session handle |
Initializes the WIA session.
| Parameter | Description | |
| uWiaVersion | The WIA version to be used. Possible values are: | |
| Value | Meaning | |
| WiaVersion1 | [1] Use WIA version 1. | |
| WiaVersion2 | [2] Use WIA version 2. | |
| phSession | Pointer to a WIA session handle. You should keep this handle handy since you are going to need it in almost all other WIA functions. | |
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
This feature is available in version 16 or higher.
L_WiaInitSession should be called before calling any other LEADTOOLS WIA toolkit function. Likewise, when the handle to the WIA session is no longer needed, it should be freed by calling L_WiaEndSession. For every call to L_WiaInitSession there must be a call to L_WiaEndSession.
Call the L_WiaIsAvailable function to determine whether a WIA source is installed, and which version of WIA is being used.
Note: You do not need to call L_WiaInitSession if you are using the high-level L_WiaAcquireSimple function, since it handles session initialization, session end, and device selection automatically.
Required DLLs and Libraries
LTWIA For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Platforms
LEADTOOLS WIA supports both 32-bit and 64-bit image acquisition for both WIA 1.0 (XP and earlier) and WIA 2.0 (VISTA and later).